Cushion-tire.



PATENTED APR. 4, 190

' W. S. MONAMARA.

CUSHION TIRE.

APPLICATION FILED NOV. 20, 1903.

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NITED STATES Patented April 1905.

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CUSHiGN-TlRE.

SPECIFICATION forming part of Letters IPatent NO. 786,591, dated April4, 1905.

Application filed November 20, 1903. Serial No. 181,903.

To all whmn it may concern:

Be it known that 1, WILLIAM S. MONAMARA, of Philadelphia, in the Stateof Pennsylvania, have invented certain new and useful Improvements inCushion-Tires, whereofthe following is a specification, reference beinghad to the accompanying drawings.

My improvements relate particularly to tires provided with springs andadapted for embodiment in vehicle-wheels.

As hereinafter described, my invention comprises a tubular sheet-metalspring formed of a longitudinal web provided with two series ofspring-leaves which respectively extend from its opposite edges, theleaves of the two series being oppositely curved in alternate relationto form adjoining sections of a substantial continuous tread and thefree ends of said leaves being capable of independent movement towardand away from said web. My invention contemplates such construction ofsaid spring-web as to adapt it to serve as the wheel-felly.

My invention also includes the various novel features of constructionand arrangement hereinafter more definitely specified and claimed.

In the accompanying drawings, Figure I is a perspective view showing asheet-metal spring embodying my improvements. Fig. II is across-sectional view of a wheel-tire and fell y inclosing such a springas is shown in Fig. I. Fig. III is a cross-sectional view of awheel-tire, showing a modified form of my invention wherein thelongitudinal web of the spring serves as a felly. Fig. IV is a plan viewof the sheet-metal blank from which the spring shown in Fig. I isformed.

Referring to the form of my invention shown in Figs. 1, II, and IV, theweb 1 of the sheetmetal spring is adapted to extend longitudinally andcircumferentially with respect to the wheel-tire and is provided uponits opposite longitudinal edges with the two series of spring-leaves 2and 3 so disposed in alternation that when bent as shown in Fig. I theyform alternate sections in alinement with each other in the direction ofthe length of said web. As shown in Figs. I and II, the free ends 5 6 ofsaid spring-leaves 2 and 3 and the longitudinal edges 8 and 9 of saidweb 1 are bent inwardly, 'so as to avoid abrasion of the tire-shoe 10,(shown in Fig. IL) which may be of rubber or any other suitablematerial, engaging in any convenient manner with the felly 11.

In the form of my invention shown in Fig. II the felly 11 is separateand distinct from the spring-web 1 and engages the heads 12 of thespokes 13 independently thereof. However, said spring may be soconstructed that its web serves as a felly to directly engage thespokes. For instance, in Fig. III the web 15 is provided withoppositely-curved springleaves 16 17 of the general arrangement shown inFigs. I and II and is formed to engage in its apertures 18 the heads 19of the wheelspokes 20. In this form of my invention the tire-shoe 21 maybe so constructed and arranged as to be retained upon the spring by theresiliency of said shoe, or it may be connected therewith by anyconvenient attaching means, such as rivets I do not desire to limitmyself to the precise details of construction and arrangement herein setforth, as it is obvious that various modifications may be madetherein'without departing from the essential features of my invention.

I claim- 1. A tubular sheet-metal tire-spring comprising a longitudinalweb at its inner circumference; spring-leaves extending in oppositedirections from said web and formingaiternate bights in alinement in thedirection of the length of said web; and inwardly-turned edges 5, and 6,at the free ends of said leaves extending within the plane of theadjoining bights, substantially as set forth.

2. A tubular sheet-metal tire-spring comprising a longitudinal web atits inner circumference; spring-leaves extending in opposite directionsfrom said web and forming alternate bights in alinement in the directionof the length of said. web; and inwardly-turned edges 8, and 9, on saidweb extending within the plane of the adjoining bights, substantially asset forth.

3. A tubular sheet-metal tire-spring comprising a longitudinal web atits inner circumference; spring-leaves extending in opposite directionsfrom said web and forming alternate bights in alineinent in thedirection of the length of said web; inwardly-turned edges 5, and 6, atthe free ends of said leaves extending within the plane of the adjoiningbights; and inwardly-tnrned edges 8, and 9, on said web ex tendingwithin the piane of the adjoining bights, substantially as set forth.

4. A tire-spring comprising a longitudinal Web and spring-leavesextending in opposite directions from said web and forming alternatebights in aiinement in the direction of the length of said web; said weband the ends of said leaves being curved transversely, and the radius ofcurvature of the web being substantially one-half that of the leaves,substan tially as set forth.

5. A tire-swim: comprising a longitudinal WILLIAM s. MGNAMARA.

Witnesses:

ARTHUR E. PAIGE, A. F. GETZFREAD.

